<template>
  <div id="demo">
    <button v-on:click="show = !show">Toggle</button>
    <transition name="fade">
      <p v-if="show">hello</p>
    </transition>
  </div>
</template>
<script>
export default {
  data() {
    return {
      show: true,
    };
  },
};
</script>
<style>
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.5s, transform 0.5s;
}
.fade-enter, .fade-leave-to /* .fade-leave-active below version 2.1.8 */ {
  opacity: 0;
  transform: translate(-200%);
}
</style>
